syntax = "proto3";

package test.common.http;

import "google/protobuf/empty.proto";

import "test/fuzz/common.proto";

import "envoy/extensions/filters/network/http_connection_manager/v3/http_connection_manager.proto";

// Structured input for conn_manager_impl_fuzz_test.

message NewStream {
  test.fuzz.Headers request_headers = 1;
  bool end_stream = 2;
  HeaderStatus status = 3;
}

enum HeaderStatus {
  HEADER_CONTINUE = 0;
  HEADER_STOP_ITERATION = 1;
  reserved 2;
  HEADER_STOP_ALL_ITERATION_AND_BUFFER = 3;
  HEADER_STOP_ALL_ITERATION_AND_WATERMARK = 4;
}

enum DataStatus {
  DATA_CONTINUE = 0;
  DATA_STOP_ITERATION_AND_BUFFER = 1;
  DATA_STOP_ITERATION_AND_WATERMARK = 2;
  DATA_STOP_ITERATION_NO_BUFFER = 3;
}

enum TrailerStatus {
  TRAILER_CONTINUE = 0;
  TRAILER_STOP_ITERATION = 1;
}

message DecoderFilterCallbackAction {
  message AddDecodedData {
    uint32 size = 1;
    bool streaming = 2;
  }
  oneof decoder_filter_callback_action_selector {
    // TODO(htuch): More decoder filer callback actions
    AddDecodedData add_decoded_data = 1;
  }
}

message RequestAction {
  message DataAction {
    uint32 size = 1;
    bool end_stream = 2;
    DataStatus status = 3;
    DecoderFilterCallbackAction decoder_filter_callback_action = 4;
  }
  message TrailerAction {
    test.fuzz.Headers headers = 1;
    TrailerStatus status = 2;
    DecoderFilterCallbackAction decoder_filter_callback_action = 3;
  }
  oneof request_action_selector {
    DataAction data = 1;
    TrailerAction trailers = 2;
    google.protobuf.Empty continue_decoding = 3;
    // Dispatch no longer throws, but rather returns an error status.
    google.protobuf.Empty throw_decoder_exception = 4 [deprecated = true];
    google.protobuf.Empty return_decoder_error = 5;
    // TODO(htuch): Model and fuzz watermark events.
  }
}

// TODO(htuch): Model and fuzz encoder filter buffering/resumption and different status returns.
message ResponseAction {
  oneof response_action_selector {
    test.fuzz.Headers continue_headers = 1;
    test.fuzz.Headers headers = 2;
    uint32 data = 3;
    test.fuzz.Headers trailers = 4;
    // TODO(htuch): Model and fuzz watermark events.
  }
  bool end_stream = 7;
}

message StreamAction {
  uint32 stream_id = 1;
  oneof stream_action_selector {
    RequestAction request = 2;
    ResponseAction response = 3;
  }
}

message Action {
  oneof action_selector {
    // Create new stream.
    NewStream new_stream = 1;
    // Perform an action on an existing stream.
    StreamAction stream_action = 2;
  }
}

message ConnManagerImplTestCase {
  repeated Action actions = 1;
  envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
      .ForwardClientCertDetails forward_client_cert = 2;
}